Respostas

2014-06-07T18:19:02-03:00
F(g(x)) = 3(2x-5) + a    |      g(f(x)) = 2(3x + a) - 5

3(2x-5) + a = 2(3x + a) - 5

6x - 15 + a = 6x + 2a - 5  --->  6x - 6x + 2a - a = -15 + 5

a = -10.